一种改进型 X 波段双环锁相频率合成器的设计

摘要

This paper introduces the basic principle of double phase-locked loop,analyzes the tradi-tional frequency synthesizing method,brings forward a design scheme of improved double phase-locked loop frequency synthesizer,uses the fractional frequency dividing phase-locked technology with low phase noise and low stray to realize better performance than traditional double phase-locked loop frequency synthesizer by optimizing the circuit structure design.This design scheme is simple and practical,and has been applied in the actual engineering,is of definite extensible value.%介绍了双环锁相的基本原理，分析了传统的频率合成方法，提出了一种改进型双环锁相频率合成器的设计方案，采用低相噪、低杂散的小数分频锁相技术，并通过优化电路结构设计，实现了比传统双环锁相频率合成器更优的性能。该设计方案简单实用，已在实际工程中得到了应用，具有一定的推广价值。